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Word Entries at Word Info: “arthropoda”
Arthropoda (noun) (a proper noun) (plural used as a singular)
Any of the invertebrates which have jointed legs or appendages; literally "jointed-feet": More species of animals belong to Phylum Arthopoda than to any other phylum (primary division of a plant or animal kingdom).
The Arthropoda include invertebrate animals (without backbones) that include insects, spiders, crustaceans, beetles, grasshoppers, butterflies, and all of the other insects.